A Compact Symmetric Microstrip Filter Based on a Rectangular Meandered-Line Stepped Impedance Resonator with a Triple-Band Bandstop Response

Table 2

Comparison of simulation and measurement results of the proposed symmetric TBBSF.

Parameter	Simulation	Measurement
Resonant frequency (GHz)	2.59, 6.80, 10.62	2.59, 6.88, 10.67
Insertion loss S11 (dB)	−0.08, −0.10, −0.16	−0.40, −0.90, −1.10
Return loss S21 (dB)	−39.16, −37.79, −35.33	−29.90, −28.29, −26.66
FBW at −3 dB (%)	42.47, 17.20, 6.77	46.28, 16.22, 8.05
Loaded quality factor (𝑄𝐿)	2.36, 5.91, 15.14	2.31, 5.21, 11.48
External quality factor (𝑄ext)	5.91, 32.89, 160.60	6.02, 36.20, 122.64